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arXiv 1606.00693hep-thgr-qc
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二维声学黑洞的热力学

Thermodynamics of acoustic black holes in two dimensions

Baocheng Zhang

摘要:

声视界可以发射类霍金热辐射,这是众所周知的,但对声黑洞却很少有类似霍金热辐射的理解。本文证明了二维流体模型和引力模型之间的运动学联系可以导致在视界处的动力学联系,这意味着声学黑洞存在类牛顿描述。然后,我们讨论了声学黑洞的热力学热力学第一定律,通过一个有趣的连接之间的类引力动力学的声学视界和热力学。我们得到了声学黑洞熵的一个普遍形式,它具有类似于熵引力的解释。我们还讨论了比热,发现背景流体速度的导数可以看作是二维玻色子势的一种新的声学模拟,这解释了二维流体动力学可以与引力动力学联系起来而四维情况却很难联系起来的原因.特别地,当对流体添加约束时,可以实现史瓦西黑洞的类似物。

英文摘要:

It is well-known that the thermal Hawking-like radiation can be emitted from the acoustic horizon, but the thermodynamic-like understanding for acoustic black holes was rarely made. In this paper, we will show that the kinematic connection can lead to the dynamic connection at the horizon between the fluid and gravitational models in two dimension, which implies that there exists the thermodynamic-like description for acoustic black holes. Then, we discuss the first law of thermodynamics for the acoustic black hole via an intriguing connection between the gravitational-like dynamics of the acoustic horizon and thermodynamics. We obtain a universal form for the entropy of acoustic black holes, which has an interpretation similar to the entropic gravity. We also discuss the specific heat, and find that the derivative of the velocity of background fluid can be regarded as a novel acoustic analogue of the two-dimensional dilaton potential, which interprets why the two-dimensional fluid dynamics can be connected to the gravitational dynamics but difficult for four-dimensional case. In particular, when a constraint is added for the fluid, the analogue of a Schwarzschild black hole can be realized.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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